Yini isilawuli se-fiber optic polarization?

Yini isilawuli se-fiber optic polarization?
Incazelo: Idivaysi engalawula isimo se-polarization esikhanyayo emicu ye-optical. -NgakananiAmadivayisi we-Fibre Optic, njengama-interrometers, dinga amandla okulawula isimo sokukhanyisa ku-fiber. Ngakho-ke, izinhlobo ezahlukene zezilawuli ze-fiber polarization ziye zakhiwa.
Isilawuli sendlebe yendlebe ku-bent optical fiber
OkujwayelekileIsilawuli se-Polarizationitholakala ngokugoba (noma ukuzulazula) imicu yokuthola i-birefmence. Ukubambezeleka okuphelele (usayizi we-birefringence) kulingana nobude be-fiber kanye nokulingana ngokweqile kwi-beadius yokugoba. Kuhlobene futhi nohlobo lwe-fiber optical. Kwezinye izimo, i-fiber ye-optical ingalimaza amahlandla ambalwa nge-radius ethile yokugoba ukuthola ukubambezeleka kwe-λ / 2 noma i-λ / 4.

Umdwebo 1
Imvamisa, amakhoyili amathathu asetshenziselwa ukwakha ikholamu, ngekhoyili ephakathi nendawo njengepuleti yegagasi lezinxenye nezinhlangothi zombili njengamapuleti wekota. Ikhoyili ngayinye ingakwazi ukujikeleza e-axis yesigameko nemicu emihle ephumayo. Ngokushintsha ukwakheka kwamakhoyili amathathu, isimo se-polarization sezehlakalo ezithile zingaguqulwa zibe yiluphi izwe lokukhipha. Kodwa-ke, umthelela ekubaphatheni futhi uhlobene ne-wavelength. Emandleni aphezulu aphezulu (okuvame ukwenzeka kuma-pulses amafushane we-Ultra), ukujikeleza kwe-nonlinear polarization kwenzeka. Ububanzi bekhoyili ye-fiber optic ngeke bube buncane kakhulu, ngaphandle kwalokho ukugoba kuzokwethula ukulahleka okwengeziwe kokugoba. Olunye uhlobo oluhlangene ngokwengeziwe, futhi luzwela kancane ngokunganaki, lisebenzisa i-birefringence eqinile (ukulondolozwa kwe-polarization) kwemicu ye-optical kune-fiber coils.
KucindezelweIsilawuli se-fiber polarization
Kukhona idivaysi engathola ama-waveplates ahlukile, angacindezela ubude bemicu ye-optical ngezinga elithile ngaphansi kwengcindezi ehlukahlukene. Ngokujikeleza kancane kancane futhi ucindezele i-fiber optical ezungeze i-eksisi yayo, futhi uyibambe ibanga elithile ukusuka engxenyeni yokucindezela, noma yisiphi isimo sokukhipha indawo ekhiphayo singatholakala. Eqinisweni, ukusebenza okufanayo neBabinet Seleil Reference (uhlobo lwenqwabaIdivayisi ye-Opticalequkethe ama-wedges amabili e-birefrisent) angatholakala, yize izimiso zazo zokusebenza zihlukile. Izikhundla eziningi zokucindezela nazo zingasetshenziswa, lapho kuphela ingcindezi, hhayi i-angle yokujikeleza, izinguquko. Izinguquko zengcindezi zivame ukufinyelelwa kusetshenziswa ama-pranscuctors we-piezoelectric. Le divayisi ingasebenza futhi njenge-polarizer, lapho i-piezoelectric iqhutshwa imvamisa ehlukile noma amasiginali angahleliwe.